CO₂ Transcritical Refrigeration Compressor Unit

The SPT series of CO₂ transcritical refrigeration compressor units utilizes carbon dioxide (CO₂) as a natural refrigerant. Comprising 21 models, the SPT series effectively addresses the unique thermodynamic and mechanical challenges of transcritical operation, where the high-pressure side operating temperature exceeds the CO₂ critical point (31.1°C, 73.8 bar).

The SPT series compressors are designed to withstand extreme pressures (up to 160 bar), wide temperature differentials, and continuous thermal cycling. Advanced material selection, a cylindrical high-pressure housing design, and robust component engineering ensure long-term durability, operational stability, and low maintenance costs. These compressors are ideal for commercial and industrial CO₂ transcritical refrigeration and heat pump systems, ensuring sustainable performance and compliance with relevant regulatory requirements.

Application Scope

CO₂ Transcritical Refrigeration Compressor Units are widely used in the following fields:

● Supermarkets and Hypermarkets: Integrated transcritical CO₂ booster systems for display case refrigeration and freezer aisles, replacing HFC systems with a fully natural refrigerant solution

● Ice and Snow Sports Venues: Ice rinks, ski slopes, and indoor snow parks requiring precise, reliable low-temperature refrigeration with natural refrigerants

● Cold Chain Logistics: Temperature-controlled warehouses, distribution hubs, and refrigerated transport infrastructure demanding sustainable, future-proof refrigeration

● Food Processing and Manufacturing: Blast freezing, chilling, and process cooling in meat, seafood, dairy, bakery, and convenience food production facilities

● CO₂ Transcritical Heat Pumps: High-efficiency heat pump systems for industrial process heating, hot water generation, and waste heat recovery — leveraging the excellent heat transfer properties of CO₂ above its critical point

● CO₂ Booster Refrigeration Systems: Medium and low temperature booster configurations for large-scale commercial and industrial refrigeration

● Pharmaceutical and Chemical Cooling: Precision low-temperature process cooling in environments where refrigerant safety and environmental compliance are paramount

● Urban District Cooling and Heating: Municipal energy infrastructure projects seeking to reduce carbon footprint through natural refrigerant heat pump technology

Technical Features

1. Ultra-high Pressure Performance: The CO₂ Transcritical Refrigeration Compressor Unit can operate safely on the high-pressure side up to 160 bar. Its cylindrical body and ductile iron alloy uniformly distribute stress, ensuring structural integrity under transcritical conditions.

2.Specially Selected Body Materials: The compressor body materials are engineered to withstand extreme temperature and pressure cycling, maintaining tensile strength, fatigue resistance, and dimensional stability.

3.Natural Refrigerant CO₂: Using CO₂ (R744) provides unmatched environmental benefits with GWP=1 and ODP=0, is non-toxic, non-flammable, and chemically inert, ensuring safety in public, food, and industrial spaces.

4.Integrated Safety Relief Valve: Factory-installed relief valves protect the compressor and system components from overpressure, providing a reliable safety mechanism.

5.High-Density Suction Gas Filter: Captures contaminants before they reach cylinders or motor windings, protecting internal components and extending service life.

6.Compact High-Grade Crankshaft: Heat-treated ductile cast iron crankshaft with integrated counterweights minimizes vibration, reduces bearing loads, and ensures smooth operation.

7.Impact-Resistant Spring Steel Valve Assembly: Spring steel valves optimize gas exchange efficiency and reliability under high-pressure transcritical conditions.

8.Composite Material Sliding Bearings: Provide low-friction support for moving parts, ensuring durability and consistent performance under high mechanical loads.

9.Integrated Motor Protection Module: Continuously monitors electrical and thermal parameters, providing automatic protection against faults such as over-current, over-temperature, phase loss, or imbalance.

Key Technical Specifications

Sustainability and Regulatory Alignment

The CO₂ Transcritical Refrigeration Compressor Unit is fully aligned with the global regulatory trajectory toward natural refrigerants. As the EU F-Gas Regulation tightens HFC phase-down schedules, as the Kigali Amendment drives global HFC reductions, and as national regulations increasingly mandate the use of low-GWP refrigerants in new commercial refrigeration installations, transcritical CO₂systems powered by the SPT Series compressor offer operators and investors a future-proof refrigeration platform that will remain fully compliant and operationally viable for the entire design life of the installation - with no risk of refrigerant availability constraints or costly future retrofits.

Why Choose the SPT Series?

● True Transcritical Engineering: The SPT Series CO₂ Transcritical Refrigeration Compressor Unit utilizes specialized materials, structural design, and component selection.

● Unmatched Pressure Capability: A 160 bar high-side pressure rating enables reliable operation in the most demanding transcritical CO₂ system configurations.

● Enhanced Stability & Longevity: Specially selected body materials and heat-treated crankshaft components ensure outstanding durability and service life under the thermally and mechanically demanding conditions of transcritical CO₂ service.

● Environmental Excellence: CO₂ delivers unmatched environmental credentials — GWP of 1, ODP of 0, non-toxic, non-flammable — positioning SPT Series installations at the forefront of sustainable refrigeration practice.

● Versatile Application Coverage: From supermarkets and ice rinks to cold chain logistics and industrial heat pumps, the SPT Series addresses the full breadth of transcritical CO₂ application requirements across 21 models.

● Energy Upgrading & Heat Recovery: Transcritical CO₂ technology enables effective energy quality upgrading and waste heat recovery, reducing net energy consumption and carbon emissions at the system level.

Why Partner with Lynxcool?

Lynxcool is a trusted global refrigeration and heat pump brand, offering decades of engineering expertise, innovative designs, and a commitment to sustainability. Benefits include:

Deep Engineering Expertise: Advanced thermodynamics, mechanical engineering, and compressor design

Comprehensive Product Portfolio: High-pressure screw compressors, semi-hermetic reciprocating compressors, and system components

Global Reach, Local Support: Timely technical assistance, spare parts, and engineering guidance worldwide

Quality Assurance: Rigorous manufacturing, in-process inspection, and performance testing

Innovation for Tomorrow: Next-gen compressors, smart control systems, and digital solutions

Application Range